CVE-2025-39933
Description
In the Linux kernel, the following vulnerability has been resolved: smb: client: let recv_done verify data_offset, data_length and remaining_data_length This is inspired by the related server fixes.
Predictions
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
Vendor advisory: alma — https://errata.almalinux.org/8/ALSA-2026-0760.html
Vendor advisory: alma — https://access.redhat.com/errata/RHSA-2026:0760
Vendor advisory: alma — https://errata.almalinux.org/8/ALSA-2026-0759.html
Vendor advisory: alma — https://bugzilla.redhat.com/2422836
Vendor advisory: alma — https://bugzilla.redhat.com/2407333
Vendor advisory: alma — https://bugzilla.redhat.com/2401514
Vendor advisory: alma — https://bugzilla.redhat.com/2373329
Vendor advisory: alma — https://access.redhat.com/errata/RHSA-2026:0759
Vendor advisory: alma — https://errata.almalinux.org/9/ALSA-2026-0793.html
Vendor advisory: alma — https://bugzilla.redhat.com/2422801
Vendor advisory: alma — https://bugzilla.redhat.com/2422788
Vendor advisory: alma — https://bugzilla.redhat.com/2419954
Vendor advisory: alma — https://bugzilla.redhat.com/2401432
Vendor advisory: alma — https://bugzilla.redhat.com/2393157
Vendor advisory: debian — https://security-tracker.debian.org/tracker/CVE-2025-39933
Vendor advisory: rocky — https://errata.rockylinux.org/RLSA-2026:0793
Vendor advisory: suse — https://www.suse.com/security/cve/CVE-2025-39933.html
Vendor advisory: redhat — https://access.redhat.com/errata/RHSA-2026:0793
Vendor advisory: rocky — https://errata.rockylinux.org/RLSA-2026:0759
Vendor advisory: rocky — https://errata.rockylinux.org/RLSA-2026:0760
OS impact
| OS | Version | Status | Fixed in |
|---|---|---|---|
| rocky | 8 | fixed | |
| rhel | 9 | fixed | |
| sles | affected | | |
| rocky | 9 | fixed | |
| debian | bookworm | affected | |
| debian | bullseye | affected | |
| debian | forky | fixed | 6.16.9-1 |
| debian | sid | fixed | 6.16.9-1 |
| debian | trixie | affected | |
References
- https://errata.rockylinux.org/RLSA-2026:0760
- https://errata.rockylinux.org/RLSA-2026:0759
- https://access.redhat.com/errata/RHSA-2026:0793
- https://www.suse.com/security/cve/CVE-2025-39933.html
- https://errata.rockylinux.org/RLSA-2026:0793
- https://security-tracker.debian.org/tracker/CVE-2025-39933
- https://bugzilla.redhat.com/2393157
- https://bugzilla.redhat.com/2401432
- https://bugzilla.redhat.com/2419954
- https://bugzilla.redhat.com/2422788
- https://bugzilla.redhat.com/2422801
- https://errata.almalinux.org/9/ALSA-2026-0793.html
- https://access.redhat.com/errata/RHSA-2026:0759
- https://bugzilla.redhat.com/2373329
- https://bugzilla.redhat.com/2401514
- https://bugzilla.redhat.com/2407333
- https://bugzilla.redhat.com/2422836
- https://errata.almalinux.org/8/ALSA-2026-0759.html
- https://access.redhat.com/errata/RHSA-2026:0760
- https://errata.almalinux.org/8/ALSA-2026-0760.html
Verify integrity in audit chain (admin only). AS-IS.